US4606635A - Defect detecting method and system - Google Patents

Defect detecting method and system Download PDF

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Publication number
US4606635A
US4606635A US06/694,627 US69462785A US4606635A US 4606635 A US4606635 A US 4606635A US 69462785 A US69462785 A US 69462785A US 4606635 A US4606635 A US 4606635A
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signals
pixels
image
comparison
defect
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Takashi Miyazawa
Hiroyuki Fukuchi
Sosuke Tateishi
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Omron Kirin Techno System Co Ltd
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Kirin Brewery Co Ltd
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Assigned to KIRIN BEER KABUSHIKI KAISHA reassignment KIRIN BEER KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: FUKUCHI, HIROYUKI, MIYAZAWA, TAKASHI, TATEISHI, SOSUKE
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Assigned to KABUSHIKI KAISHA KIRIN TECHNO-SYSTEM reassignment KABUSHIKI KAISHA KIRIN TECHNO-SYSTEM ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: KIRIN BEER KABUSHIKI KAISHA
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/90—Investigating the presence of flaws or contamination in a container or its contents
    • G01N21/9054—Inspection of sealing surface and container finish

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  • the present invention relates to a method of and a system for detecting a defect particularly suitable where the surface of that part of the object or body which is under examination is substantially a surface of revolution.
  • a part under examination is a mouth portion of a beverage bottle such as a bottle for beer, other alcoholic liquors, soft drinks or foods.
  • a bottle for alcoholic liquors, soft drinks or foods has a defect such as scratches, cracks or breakages at its mouth, then it is impossible or difficult to completely seal the mouth and problems in food hygiene occur. Thus, it is necessary to detect a defect and to reject the bottles having a defect. It is also necessary to detect a defect at other parts, such as the bottom of a bottle for maintaining food hygiene. There are similar needs in connection with cans.
  • An object of the invention is to improve accuracy in inspection of a bottle or the like.
  • a method of detecting a defect in a part of an object comprising the steps of:
  • a system for detecting a defect in a part of an object said part having a surface which is substantially a surface of revolution, said system comprising:
  • an illuminating device having an annular portion for emitting light rays, said annular portion being coaxially disposed with said surface of said part when said object is being examined;
  • image forming means for receiving light rays reflected at said surface of said part to form an image of said part, said image being constituted of pixels corresponding to the respective positions of said surface of said part;
  • storage means for storing signals having a value indicative of the brightness of said pixels in relation to the respective positions of said pixels in said image
  • judging means for judging whether or not there is a defect in accordance with comparison of the signals of each set with a preset value, and with comparison between signals of two sets which are positioned along two of said imaginary lines which are proximate to each other.
  • FIG. 1 shows general arrangement of an embodiment of a defect detecting system according to the invention
  • FIG. 2 shows, in vertical cross section, an example of illuminating device usable in the arrangement of FIG. 1;
  • FIGS. 3A and 3B schematically illustrate examples of optical images obtained by the CCD camera 4 shown in FIG. 1;
  • FIGS. 4A and 4B schematically illustrate how the light rays are reflected at various parts of the bottle mouth
  • FIG. 5 is a block diagram showing an example of the data processor
  • FIGS. 6A and 6B show pixels arranged in a matrix and radially extending lines
  • FIG. 7 shows an example of signals of sets and the corresponding signals in two values
  • FIG. 8 is a block diagram showing a first judging circuit
  • FIG. 9 shows an example of binary signals divided into sections, some of which are marked with X;
  • FIG. 10 is a block diagram showing a second judging circuit
  • FIGS. 11A and 11B show examples of sets of signals and the results of discrimination.
  • FIG. 1 shows an embodiment of a defect detecting system according to the present invention.
  • the illustrated system is for detecting a defect in a bottle mouth portion.
  • Bottles 1 to be inspected are conveyed in turn by a conveyor or the like, not shown, and brought to an inspection position (the position as illustrated), when the mouth 1a is illuminated by an illuminating device 2 having an annular light emitting portion 2a.
  • the arrangement is such that when the bottle 1 is at the inspection position, the surface of the mouth 1a which is substantially a surface of revolution whose axis coincides with the axis of the bottle 1 is coaxially disposed with the annular light emitting portion 2a.
  • the illuminating device 2 is situated over the bottle 1 and has an opening 3 which allows the reflected light rays from the mouth 1a to pass therethrough.
  • a two-dimensional photoelectric converting device such as a CCD (charge coupled device) camera 4 to receive light rays which have passed through the opening 3 and through a lens 4a, by which an optical image of the mouth 1a is formed on the light receiving surface of the CCD camera 4.
  • the CCD camera 4 comprises a matrix of 200 ⁇ 200 photoelectric converting elements, by which pixel signals corresponding to the brightness of the respective portions of the mouth 1of the bottle 1 are formed.
  • the light emitting portion 2a of the illuminating device 2 emits light rays so that, when the bottle 1 is at the inspection position, the mouth 1a is illuminated by light rays incident from above off to the radially outward, and uniformly throughout the circumference.
  • the optical image of the surface of the mouth 1a produced in the CCD camera 4 is of annular configuration if there is no defect in the mouth 1a.
  • the exact shape, contrast and the like of the optical image differ depending on the height of the light emitting portion 2a of the illuminating device, the incident angle of the illuminating light, and the character of the illuminating light (i.e., whether or not the directivity is acute).
  • the manner of illumination should therefore be optimized for the particular configuration of the inspected mouth portion.
  • FIG. 2 shows, in vertical cross section, an example of the illuminating device 2, which comprises an inner cylinder 2b, an outer cylinder 2c, an annular top cover 2d connecting the inner and the outer cylinders 2b and 2c, an inner shield 2e connected to the lower end of the inner cylinder 2b, an outer shield 2f connected to the lower end of the outer cylinder 2c, and a plurality of, e.g., six, tungsten halogen lamps 2g fitted in respective sockets 2h arranged, at equal intervals, circumferentially along the annular top cover 2d and held to the annular top cover 2d.
  • the illuminating device 2 which comprises an inner cylinder 2b, an outer cylinder 2c, an annular top cover 2d connecting the inner and the outer cylinders 2b and 2c, an inner shield 2e connected to the lower end of the inner cylinder 2b, an outer shield 2f connected to the lower end of the outer cylinder 2c, and a plurality of, e.g., six,
  • the inner surface of the outer cylinder 2c and the outer surface of the inner cylinder 2b are diffusing surfaces which have a high reflection coefficient and yet have a certain degree of roughness.
  • the inner cylinder 2b is vertically movable relative to the outer cylinder 2c, and the width of the opening 2a between the inner and the outer shields 2e and 2f can be adjusted through such vertical movement.
  • the opening 2a constitutes the light emitting portion which emits the illuminating light and the directivity of the illuminating light can be varied by variation of the width of the opening 2a.
  • the entire illuminating device 2 is also movable up and down by means, not shown, and the incident angle of the illuminating light emitting through the opening 2a and falling upon the mouth 1a can be varied by such up-and-down movement of the device 2.
  • FIGS. 3A and 3B schematically illustrate examples of optical images obtained by the CCD camera 4 when the mouth portion 1a is illuminated by the illuminating device 2.
  • the bright portions of the image are shaded while the dark portions of the image are left unshaded.
  • the chain lines 1c and 1d respectively indicate the inner and the outer circumferential surfaces of the mouth 1a.
  • the image of FIG. 3A is that of a mouth with no defect.
  • the image of FIG. 3B is that of a mouth with a defect. When there is no defect the image has two bright rings. This is because the vertical cross section of the mouth 1a is rounded as in FIG. 4A, so that substantial part of the light reflected at the rounded inner edge 1e and the light reflected at the rounded outer edge 1f are directed to the camera 4, and hence they are most intensive among the light rays as received by the camera 4.
  • the image will have a dark spot 1x as shown in FIG. 3B (unshaded spot in the figure). This is because some of the light rays scattered at the defect 1x are directed away from the camera 4. If there is a defect, e.g., a breakage 1y in the portion midway between the inner and the outer edge portions, as shown in FIG. 4B, the image will have a bright spot 1y as shown in FIG. 3B (shaded spot in the figure). This is because some of the light rays scattered at the defect 1y are directed to the camera 4.
  • the inner and the outer edges portions are more frequently damaged than other portions.
  • use of the arrangement as shown in FIG. 3A is advantageous in that the light rays reflected at the rounded edge portions are made to reach the camera 4 (if there is no defect) and the dark spot in the bright rings tends to have a higher contrast than the bright spot in the dark rings.
  • Electrical signals representing the brightness of the pixels of the optical image of FIG. 3A or FIG. 3B are processed by a data processor 5, which makes judgement as to whether or not there is a defect in the bottle mouth.
  • the bottle which has been judged to have a defect is rejected by a rejecting device 6.
  • FIG. 5 shows in detail an example of the data processor 5.
  • the pixels of the optical image obtained by the camera 4 are scanned and pixel signals respectively representing the brightness of the pixels are sequentially taken out and amplified by an amplifier 7, and then digitized by an A/D (analog-to-digital) converter 8.
  • the digital signals from the A/D converter 8 are stored in a data memory 9 at predetermined addresses (memory locations) respectively related to the positions of the pixels in the image.
  • the scanning of the pixels may for example be in the form of raster-scanning.
  • An address circuit 11 designates the address of the data memory 9, i.e., it provides the data memory 9 with address information so that the pixel data are read out of the data memory 9 in the order which will be understood from the following description.
  • the pixel data read out are supplied to judging circuits 13 and 14.
  • the pixels of the image are arranged to form a matrix as partly shown (a quarter of the image is shown) in FIGS. 6A and 6B. It is assumed that the pixel signals indicative of the brightness are quantized by the A/D converter 8 into 64-level values, i.e., into digital signals of 6 bits. It is also assumed that the value 63 indicates the brightest level while the value 0 indicates the darkest level. The value of each pixel is stored in the memory 9 at the address related to the position of the pixel within the image.
  • the signals of the respective pixels stored in the memory 9 are processed to determine whether there is a defect.
  • the principle and the manner for the judgement are described below.
  • a center detecting circuit 12 detects the center O (FIG. 6) of the image corresponding to the axis of the bottle 1 (and hence the axis of the mouth 1a).
  • the detection of the center O is made in the following manner. First, the pixels that are positioned along a horizontal (as viewed in FIG. 6) line which should preferably be as close as possible to the center O (or pass the presumed position of the center O) are examined and the leftmost pixel and the rightmost pixel among the pixels that are recognized to be "bright" are identified. Then the pixels that are positioned along a vertical (as viewed in FIG.
  • the address circuit 11 sequentially designates the address of the memory 9 in such a manner that a predetermined number (e.g., 13) of signals of the pixels that are positioned along one of radially extending lines (some of which are indicated by OA, OB, OC, . . . ) and passing through the center O and that are positioned and distributed within a predetermined radial range (range between the chain lines R1 and R2) are read out as a set of signals.
  • the radially extending lines are 6.5° apart, and reading the set of signals is repeated 720 times. As a result, 720 sets of signals for lines 0.5° apart are obtained.
  • the reading of the sets of signals may alternatively be done in succession for lines separated by 0.5° or any other angle.
  • the radially extending lines other than the horizontal and the vertical lines cross the pixels obliquely. A criterion is therefore necessary for determining which pixels are positioned "along" each radially extending line.
  • the following criterion is adopted.
  • all the pixels are regarded to have no gaps between them, and those pixels which contain a cross point between the radial line in question and a circle centered at the center O and passing through the center of a corresponding pixel along a horizontal line (reference line) are regarded to be positioned along the radial line. If a pixel contains two such cross points, that pixel serves twofold, i.e., the corresponding pixel signal is read out twice to serve as two separate signals.
  • the sets of signals corresponding to the lines OA, OB, OC, . . . . are respectively called set A, set B, set C, . . . .
  • the signals of each set are given respective numbers in accordance with the numbers of the corresponding pixels as counted from the innermost pixel.
  • the sets of signals successively read out are supplied to the first and the second judging circuits 13 and 14.
  • the first judging circuit 13 may for example be formed as shown in FIG. 8.
  • a discriminator 31 receives a set of signals and produces, for each signal, a signal in two levels having a value "1" or "0" depending on whether the signal from the memory is greater than a certain threshold value, which may for example be 29.
  • FIG. 7 shows an example of signals (in 64 levels) of sets A-G and the corresponding signals (in two levels) produced by the discriminator 31.
  • the gate counters 32a-32c receive the signals in two levels of each set and count the number of the signals that have a value "1" and that are within a predetermined section predetermined for the respective gate counters.
  • the respective sections comprise the second to the fifth pixel signals, the sixth to the eighth pixel signals, and the nineth to the eleventh pixel signals.
  • the sections are made to cover the radial ranges of the inner bright ring, the dark ring and the outer bright ring of FIG. 3A.
  • the sections which are adjacent to each other do not overlap each other.
  • the sections may alternatively be ones which overlap each other or ones which are separated by one or more pixels.
  • Discriminators 33a-33c are provided in association with respective gate counters 32a-32c and each discriminator judges whether or not the count value is within a predetermined range.
  • the predetermined ranges for the discriminatbrs 33a-33c are 2 through 3, 0, and 2 through 3, respectively. If the count value is outside of the range, the discriminator produces "1" .
  • FIG. 9 shows an example of the discrimination. More particularly, it shows (how) the two-level signals of the first to the third sections and the sections having the count value outside the range are marked with "X".
  • Counters 34a-34c are provided in association with the discriminators 33a-33c. Each counter counts the number of output having a value "1". This counting is continued while the processing of data for the 720 lines is completed.
  • Discriminators 35a-35c are provided in association with the counters 34a-34c. Each discriminator receives the count value of the counter and judges whether or not the count value exceeds a predetermined value, and produces an output of a value "1" when the count exceeds.
  • An OR gate 36 obtains the logical sum of the outputs of the discriminators 35a-35c.
  • the output of the OR gate 36 constitutes the output of the first judging circuit 13.
  • a second judging circuit 14 is formed as shown in FIG. 10.
  • a register 41 stores a set of signals read out of the memory 9. Each time a new set of signals are read out, the old set is replaced by the new one.
  • a subtractor 42 determines the differences between the values of the signals currently being read out of the memory and the values of the signals stored in the register 41 and hence read out in the preceding reading operation. Thus, differences in value between signals of pixels which are substantially equi-distant from the center O and which are along different radial lines 6.5° apart are determined. It should be noted that the difference angle may be other than 6.5°, but should be a small value to ensure that the comparison is made between radial lines proximate to each other.
  • a discriminator 43 receives the differences and produces an output "1" if each of the differences exceeds a predetermined value, e.g., 19.
  • FIG. 11A shows signals of set A and set B and the corresponding outputs of the discriminator 43 and
  • FIG. 11B shows signals of set C and set D and the corresponding outputs of the discriminator 43.
  • a counter 44 counts the number of the outputs having a value "1".
  • a discriminator 45 produces an output of "1" if the count value at the counter 44 exceeds a certain predetermined value, e.g., 1.
  • the output of the discriminator 45 is "1" it means that there are more than a predetermined number of "large” differences between the signals of the pixels that are along different radial lines and that are at substantially equal distance from the center O.
  • a counter 46 counts the number of outputs of the discriminator 45 having a value "1". This counting is continued until the comparison between two radial lines is repeated 720 times, i.e., from comparison between set A and set B and up to comparison between the 720-th set and set A (first set).
  • a discriminator 47 judges whether or not the count value exceeds a predetermined value, and produces an output of "1" if the count value exceeds.
  • the output of the discriminator 47 constitutes the output of the second judging circuit 14.
  • a logic circuit 15 receives the outputs of the first and the second judging circuits 13 and 14.
  • the logic circuit 15 comprises an OR gate, and produces an output of "1" if at least one of the judging circuits 13, 14 produces an output of "1".
  • the output of the logic circuit 15 constitutes the output of the data processor 5.
  • the judgement made at the first judging circuit 13 is as to whether or not the number of the two-level signals that belong to the specific section and that have a value "1", i.e., indicating "bright" is within a predetermined range.
  • the resultant image is annular, so that the signals of the pixels that are at approximately equal distance from the center should have about the same value and the sections of FIG. 9 are made to cover the bright and the dark rings in FIG. 3A.
  • the expected number or the range of numbers of signals having a value "1" within each section can be determined experimentally. If the bottle mouth being inspected has no defect, the number of the signals having a value "1" should be within the range determined.
  • the reason why the number of signals "1" is outside the predetermined range is not necessarily presence of a defect but can also be noise, error in detection of the center, and difference in size or shape of the particular bottle being inspected. It is therefore not proper to recognize presence of a defect upon a single judgement of the number of "1" being outside the range. But if such judgement is repeated several times it is probable that there is a defect. It is for this reason that recognition of a defect is made only when the above-described judgement is repeated a certain number of times or more.
  • Judgment made by the second judging circuit 14 involves comparison between pixels which are situated along two different radial lines 6.5° apart (i.e., close to each other) and which are at substantially equal distance from the center. This is based on the fact that the image is annular and the signals of the pixels which are at the same distance from the center will have the same value. This is why recognition of a defect can be made on judgment of the difference in values of the signals of such pixels. But here again, recognition of a defect is made on condition that such judgment is repeated a certain number of times. This is to avoid a faulty recognition of a defect due to noise or the like.
  • the value of each two-level signal is determined depending on whether or not the signal of each pixel exceeds a threshold value. But, the value of each two-level signal may alternatively be determined in accordance with the difference between the signals of pixels which are along the same radial line and which are close to each other. The value of each two-level signal may still alternatively be determined in accordance with the difference as well as the value of the signal of each pixel.
  • the sum of the signals in 64 levels of the pixels in each section may be calculated and judgment may be made as to whether the sum is within a predetermined range.
  • the second judging circuit 14 differences between the signal in 64 levels of the pixels are determined, and the differences are then converted into binary signals. But the signals of the individual pixels may first be converted into tow-level signals in the same way as in the discriminator 31 of FIG. 8, and, depending on whether or not the binary signals of pixels of equi-distance coincide with each other, a signal "0" or a signal "1" may be produced and used in place of the two-level signal indicating that the difference is large.
  • the arrangement may be such that unless the two-level signal indicating the large difference or the non-coincidence is repeated a certain predetermined number of times (e.g., twice), such two-level signal (appearing only less than such predetermined number of times) may be disregarded.
  • a certain predetermined number of times e.g., twice
  • the defect detecting apparatus hereinabove described is capable of detecting a defect such as a breakage, a crack, a scratch, a sticking foreign matter or the like in a bottle mouth. It is also applicable to inspection of a flange portion of a can (an empty can before charging) as to presence of a sticking foreign matter, breakage, a flash or any other defect. It is also applicable for inspection of a bottom portion of a bottle, a bottom portion of a can, or any other portion whose surface is normally a surface of revolution.
  • signals of the pixels along each radial line are compared with respective predetermined values, and the signals of the equi-distant pixels along different but close radial lines are compared with each other, and presence or absence of a defect is made in accordance with the results of the comparisons.
  • the effect of the shape of the defect is therefore minimized and accuracy in detection is improved.

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JP59015870A JPS60159637A (ja) 1984-01-31 1984-01-31 欠陥検出方法および装置

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EP (1) EP0150846B1 (enrdf_load_stackoverflow)
JP (1) JPS60159637A (enrdf_load_stackoverflow)
AU (1) AU565157B2 (enrdf_load_stackoverflow)
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Cited By (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4731649A (en) * 1986-09-11 1988-03-15 Vistech Corp. Oblique illumination for video rim inspection
US4746212A (en) * 1985-03-29 1988-05-24 Hajime Industries Ltd. Bottle cap inspection apparatus
US4758084A (en) * 1985-07-10 1988-07-19 Kirin Beer Kabushiki Kaisha Apparatus for detecting defects on a bottle mouth with a screw thread
US4775889A (en) * 1985-09-21 1988-10-04 Hajime Industries Ltd. Bottle mouth defect inspection apparatus
US4786801A (en) * 1987-07-21 1988-11-22 Emhart Industries Inc. Finish Leak Detector having vertically movable light source
US4811251A (en) * 1985-02-22 1989-03-07 Toyo Glass Company Limited Vessel opening top inspection method
US4831250A (en) * 1986-10-13 1989-05-16 Kirin Beer Kabushiki Kaisha Apparatus for detecting defects on bottle mouth with screw thread
US4882498A (en) * 1987-10-09 1989-11-21 Pressco, Inc. Pulsed-array video inspection lighting system
US4907443A (en) * 1987-09-29 1990-03-13 Mutec Ingenierie Process and apparatus for monitoring the pressure prevailing in a vessel or receptacle
US4914289A (en) * 1988-10-26 1990-04-03 Inex-Vistech Technologies Incorporated Article inspection system for analyzing end and adjacent sides
US4965841A (en) * 1985-07-05 1990-10-23 Nippondenso Co., Ltd. Luminance cumulative integrating method and apparatus in image processes
US4972093A (en) * 1987-10-09 1990-11-20 Pressco Inc. Inspection lighting system
EP0426968A1 (de) * 1989-10-06 1991-05-15 Elpatronic Ag Vorrichtung zum Prüfen der Mündung von Flaschen oder dergleichen
US5045688A (en) * 1989-12-04 1991-09-03 Coors Brewing Company Method and apparatus for inspection of bottle thread having a unitary image plane
US5065443A (en) * 1989-12-04 1991-11-12 Allen-Bradley Company, Inc. Image processor with illumination variation compensation
US5072127A (en) * 1987-10-09 1991-12-10 Pressco, Inc. Engineered video inspecting lighting array
DE4133315A1 (de) * 1990-10-09 1992-04-16 Hajime Industries Vorrichtung zur pruefung einer oberflaeche
WO1992008464A1 (en) * 1990-11-15 1992-05-29 Tanabe Seiyaku Co. Ltd. Substituted urea and related cell adhesion modulation compounds
US5172005A (en) * 1991-02-20 1992-12-15 Pressco Technology, Inc. Engineered lighting system for tdi inspection comprising means for controlling lighting elements in accordance with specimen displacement
US5220400A (en) * 1990-06-01 1993-06-15 Texas Instruments Incorporated Container inspection system
EP0540018A3 (en) * 1991-11-01 1993-06-30 Fuji Electric Co., Ltd. A cylindrical container inner surface tester based on an image processing technology
US5229837A (en) * 1989-01-19 1993-07-20 The Coca-Cola Company Method for distinguishing between recovered containers for the presence or absence of contaminants
US5249034A (en) * 1991-01-29 1993-09-28 Toyo Glass Co., Ltd. Method of and apparatus for inspecting end of object for defect
US5305391A (en) * 1990-10-31 1994-04-19 Toyo Glass Company Limited Method of and apparatus for inspecting bottle or the like
AU648354B2 (en) * 1990-11-20 1994-04-21 Saint-Gobain Cinematique Et Controle Optical inspection of moving objects
US5353357A (en) * 1992-12-04 1994-10-04 Philip Morris Incorporated Methods and apparatus for inspecting the appearance of substantially circular objects
US5369713A (en) * 1992-07-09 1994-11-29 Schwartz; Nira Inspection method using area of interest (AOI) analysis
US5541418A (en) * 1992-09-16 1996-07-30 British Nuclear Fuels Plc Inspection of cylindrical objects
US5576827A (en) * 1994-04-15 1996-11-19 Micromeritics Instrument Corporation Apparatus and method for determining the size distribution of particles by light scattering
US5588068A (en) * 1992-12-04 1996-12-24 Philip Morris Incorporated Methods and apparatus for inspecting the appearance of substantially circular objects
US5592286A (en) * 1995-03-08 1997-01-07 Alltrista Corporation Container flange inspection system using an annular lens
US5615007A (en) * 1994-05-20 1997-03-25 Eisai Co., Ltd. Method of detecting crack and chip in flange of syringe
US5617204A (en) * 1994-04-19 1997-04-01 Hinata; Kunio Method for inspecting neck portion of molded bottle
US5699152A (en) * 1995-04-03 1997-12-16 Alltrista Corporation Electro-optical inspection system and method
US5717486A (en) * 1994-01-21 1998-02-10 Elpatronic Ag Process for removing returnable containers from circulation utilizing image processing of brightness values for inspection windows
US5805279A (en) * 1996-01-11 1998-09-08 Alltrista Corporation Method and apparatus for illuminating and imaging a can end coated with sealing material
US5923419A (en) * 1997-06-16 1999-07-13 Insight Control Systems International System and method for optical inspection of recessed surfaces
US6061125A (en) * 1998-01-27 2000-05-09 Insight Control Systems International Dual illumination apparatus for container inspection
US6122048A (en) * 1994-08-26 2000-09-19 Pressco Technology Inc. Integral field lens illumination for video inspection
US20010048759A1 (en) * 2000-05-31 2001-12-06 Toyo Jikoki Co., Ltd. Inspection method for cap installation condition
US6448549B1 (en) 1995-08-04 2002-09-10 Image Processing Systems, Inc. Bottle thread inspection system and method of operating the same
US6621569B2 (en) 2000-05-26 2003-09-16 Applied Vision Company Llc Illuminator for machine vision
US6643009B2 (en) * 2001-06-20 2003-11-04 Japan Crown Cork Co. Ltd. Method of inspecting a wrap-fitted state of a cap wrap-fitted to a neck of a bottle and apparatus therefor
FR2846424A1 (fr) * 2002-10-25 2004-04-30 Bsn Glasspack Procede et dispositif d'eclairage pour detecter des defaut et/ou de manque de matiere sur la bague d'un recipient transparent ou translucide
US20040218807A1 (en) * 1990-11-16 2004-11-04 Applied Materials, Inc. Optical inspection method for substrate defect detection
US20040263620A1 (en) * 2003-06-30 2004-12-30 Diehr Richard D. Container inspection machine
US6967319B2 (en) * 2002-06-10 2005-11-22 Heye International Gmbh Device for checking the neck of a container for the presence of an incline
EP0607692B2 (en) † 1992-12-21 2005-12-28 JOHNSON & JOHNSON VISION PRODUCTS, INC. A method and system of inspecting ophthalmic lenses
EP0604179B2 (en) † 1992-12-21 2006-01-04 JOHNSON & JOHNSON VISION PRODUCTS, INC. Ophthalmic lens inspection method and apparatus
FR2877724A1 (fr) * 2004-11-09 2006-05-12 Tiama Sa Procede et dispositif d'eclairage pour determiner la presence de defauts sur la surface de la bague d'un recipient
WO2006100077A1 (de) * 2005-03-24 2006-09-28 OBE OHNMACHT & BAUMGäRTNER GMBH & CO. KG Vorrichtung zur optischen formerfassung von gegenständen und oberflächen
US20100085426A1 (en) * 2006-10-23 2010-04-08 Diehr Richard D Machine for Inspecting Glass Containers
CN101147042B (zh) * 2005-03-24 2010-12-29 Obe-工厂翁玛赫特与鲍姆盖特纳公司 用于光学测量物体的形状和表面的设备
US20110026823A1 (en) * 2009-07-31 2011-02-03 Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. System and method for detecting blemishes in an image captured by an electronic device
US20130057677A1 (en) * 2010-04-26 2013-03-07 Becton Dickinson France Device, kit and method for inspection of an article
WO2016059343A1 (fr) * 2014-10-17 2016-04-21 Msc & Sgcc Procédés, dispositif et ligne d'inspection pour visualiser la planéité d'une surface de bague de récipient
DE102018133567A1 (de) * 2018-12-21 2020-06-25 Böllhoff Verbindungstechnik GmbH Verfahren zur computergestützten optischen Zustandsbewertung eines Gegenstands
DE102015017539B4 (de) 2014-02-27 2025-01-02 Keyence Corporation Bildmesseinrichtung

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60249204A (ja) * 1984-05-24 1985-12-09 肇産業株式会社 照明装置
US4688939A (en) * 1985-12-27 1987-08-25 At&T Technologies, Inc. Method and apparatus for inspecting articles
JPS6372552U (enrdf_load_stackoverflow) * 1986-10-30 1988-05-14
JP2514944B2 (ja) * 1987-01-26 1996-07-10 サントリー株式会社 瓶類の光学検査方法及びその装置
DE3809221A1 (de) * 1988-03-18 1989-09-28 Roth Electric Gmbh Verfahren zum detektieren von fehlstellen an pressteilen oder anderen werkstuecken und vorrichtung zur durchfuehrung des verfahrens
US4974261A (en) * 1988-11-15 1990-11-27 Matsushita Electric Works, Ltd. Optical surface inspection method
DE3938471A1 (de) * 1989-11-20 1991-05-23 Freudenberg Carl Fa Verfahren zur optischen oberflaechenkontrolle
JPH07102978B2 (ja) * 1991-03-13 1995-11-08 石塚硝子株式会社 ガラス壜の検査方法
JP3044961B2 (ja) * 1993-02-12 2000-05-22 富士電機株式会社 円形容器内面検査装置
JP3212389B2 (ja) * 1992-10-26 2001-09-25 株式会社キリンテクノシステム 固体上の異物検査方法
DE4408948C2 (de) * 1994-03-16 1998-02-26 Till Gea Gmbh & Co Verfahren und Vorrichtung zur Überprüfung von Gebinden
DE102007043609B4 (de) 2007-09-13 2014-05-28 Ioss Intelligente Optische Sensoren & Systeme Gmbh Integrierte Beleuchtungsvorrichtung für einen optischen Codeleser
JP2009121888A (ja) * 2007-11-13 2009-06-04 Kirin Distillery Co Ltd Ｐｅｔプリフォーム検査装置
JP6070940B2 (ja) * 2013-03-07 2017-02-01 東洋製罐株式会社 粘稠物が充填された容器の検査方法とその装置
JP6576661B2 (ja) * 2015-03-26 2019-09-18 株式会社エム・アイ・エル 画像処理装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4026414A (en) * 1975-01-18 1977-05-31 Hermann Kronseder Maschinenfabrik Apparatus for testing tops of containers for damage
US4454542A (en) * 1981-07-30 1984-06-12 Kirin Beer Kabushiki Kaisha Defect detecting method and apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4448526A (en) * 1980-06-27 1984-05-15 Kirin Beer Kabushiki Kaisha Defect detecting method and device
US4378494A (en) * 1980-11-07 1983-03-29 Owens-Illinois, Inc. Apparatus and method for detecting defects in glass bottles using event proximity
JPS57132044A (en) * 1981-02-10 1982-08-16 Hitachi Metals Ltd Discriminating method of surface defect
DE3314465A1 (de) * 1983-04-21 1984-10-25 Robert Bosch Gmbh, 7000 Stuttgart Verfahren zur optischen oberflaechenpruefung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4026414A (en) * 1975-01-18 1977-05-31 Hermann Kronseder Maschinenfabrik Apparatus for testing tops of containers for damage
US4454542A (en) * 1981-07-30 1984-06-12 Kirin Beer Kabushiki Kaisha Defect detecting method and apparatus

Cited By (80)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4811251A (en) * 1985-02-22 1989-03-07 Toyo Glass Company Limited Vessel opening top inspection method
US4746212A (en) * 1985-03-29 1988-05-24 Hajime Industries Ltd. Bottle cap inspection apparatus
US4965841A (en) * 1985-07-05 1990-10-23 Nippondenso Co., Ltd. Luminance cumulative integrating method and apparatus in image processes
US4758084A (en) * 1985-07-10 1988-07-19 Kirin Beer Kabushiki Kaisha Apparatus for detecting defects on a bottle mouth with a screw thread
AU588610B2 (en) * 1985-07-10 1989-09-21 Kirin Beer Kabushiki Kaisha Apparatus for detecting defects on a bottle mouth with a screw thread
US4775889A (en) * 1985-09-21 1988-10-04 Hajime Industries Ltd. Bottle mouth defect inspection apparatus
US4731649A (en) * 1986-09-11 1988-03-15 Vistech Corp. Oblique illumination for video rim inspection
US4831250A (en) * 1986-10-13 1989-05-16 Kirin Beer Kabushiki Kaisha Apparatus for detecting defects on bottle mouth with screw thread
US4786801A (en) * 1987-07-21 1988-11-22 Emhart Industries Inc. Finish Leak Detector having vertically movable light source
US4907443A (en) * 1987-09-29 1990-03-13 Mutec Ingenierie Process and apparatus for monitoring the pressure prevailing in a vessel or receptacle
US4882498A (en) * 1987-10-09 1989-11-21 Pressco, Inc. Pulsed-array video inspection lighting system
US4972093A (en) * 1987-10-09 1990-11-20 Pressco Inc. Inspection lighting system
US5072127A (en) * 1987-10-09 1991-12-10 Pressco, Inc. Engineered video inspecting lighting array
US4914289A (en) * 1988-10-26 1990-04-03 Inex-Vistech Technologies Incorporated Article inspection system for analyzing end and adjacent sides
EP0535225B1 (en) * 1989-01-19 1997-07-16 The Coca-Cola Company Method for discriminating recovered containers
US5229837A (en) * 1989-01-19 1993-07-20 The Coca-Cola Company Method for distinguishing between recovered containers for the presence or absence of contaminants
EP0426968A1 (de) * 1989-10-06 1991-05-15 Elpatronic Ag Vorrichtung zum Prüfen der Mündung von Flaschen oder dergleichen
US5072107A (en) * 1989-10-06 1991-12-10 Elpatronics Ag Apparatus for examining the mouths of bottles or the like
US5045688A (en) * 1989-12-04 1991-09-03 Coors Brewing Company Method and apparatus for inspection of bottle thread having a unitary image plane
US5065443A (en) * 1989-12-04 1991-11-12 Allen-Bradley Company, Inc. Image processor with illumination variation compensation
US5220400A (en) * 1990-06-01 1993-06-15 Texas Instruments Incorporated Container inspection system
DE4133315A1 (de) * 1990-10-09 1992-04-16 Hajime Industries Vorrichtung zur pruefung einer oberflaeche
US5305391A (en) * 1990-10-31 1994-04-19 Toyo Glass Company Limited Method of and apparatus for inspecting bottle or the like
WO1992008464A1 (en) * 1990-11-15 1992-05-29 Tanabe Seiyaku Co. Ltd. Substituted urea and related cell adhesion modulation compounds
US20040263834A1 (en) * 1990-11-16 2004-12-30 Applied Materials, Inc. Optical inspection apparatus for substrate defect detection
US7499583B2 (en) 1990-11-16 2009-03-03 Applied Materials, Israel, Ltd. Optical inspection method for substrate defect detection
US20040218807A1 (en) * 1990-11-16 2004-11-04 Applied Materials, Inc. Optical inspection method for substrate defect detection
AU648354B2 (en) * 1990-11-20 1994-04-21 Saint-Gobain Cinematique Et Controle Optical inspection of moving objects
US5249034A (en) * 1991-01-29 1993-09-28 Toyo Glass Co., Ltd. Method of and apparatus for inspecting end of object for defect
US5172005A (en) * 1991-02-20 1992-12-15 Pressco Technology, Inc. Engineered lighting system for tdi inspection comprising means for controlling lighting elements in accordance with specimen displacement
EP0540018A3 (en) * 1991-11-01 1993-06-30 Fuji Electric Co., Ltd. A cylindrical container inner surface tester based on an image processing technology
US5369713A (en) * 1992-07-09 1994-11-29 Schwartz; Nira Inspection method using area of interest (AOI) analysis
US5703377A (en) * 1992-09-16 1997-12-30 British Nuclear Fuels Plc Apparatus for the inspection of cylindrical objects having a borescope device
US5541418A (en) * 1992-09-16 1996-07-30 British Nuclear Fuels Plc Inspection of cylindrical objects
US5353357A (en) * 1992-12-04 1994-10-04 Philip Morris Incorporated Methods and apparatus for inspecting the appearance of substantially circular objects
US5588068A (en) * 1992-12-04 1996-12-24 Philip Morris Incorporated Methods and apparatus for inspecting the appearance of substantially circular objects
EP0607692B2 (en) † 1992-12-21 2005-12-28 JOHNSON & JOHNSON VISION PRODUCTS, INC. A method and system of inspecting ophthalmic lenses
EP0604179B2 (en) † 1992-12-21 2006-01-04 JOHNSON & JOHNSON VISION PRODUCTS, INC. Ophthalmic lens inspection method and apparatus
US5717486A (en) * 1994-01-21 1998-02-10 Elpatronic Ag Process for removing returnable containers from circulation utilizing image processing of brightness values for inspection windows
US5576827A (en) * 1994-04-15 1996-11-19 Micromeritics Instrument Corporation Apparatus and method for determining the size distribution of particles by light scattering
US6091492A (en) * 1994-04-15 2000-07-18 Micromeritics Instrument Corporation Apparatus and method for determining the size distribution of particles by light scattering
US5617204A (en) * 1994-04-19 1997-04-01 Hinata; Kunio Method for inspecting neck portion of molded bottle
US5615007A (en) * 1994-05-20 1997-03-25 Eisai Co., Ltd. Method of detecting crack and chip in flange of syringe
US6122048A (en) * 1994-08-26 2000-09-19 Pressco Technology Inc. Integral field lens illumination for video inspection
US5592286A (en) * 1995-03-08 1997-01-07 Alltrista Corporation Container flange inspection system using an annular lens
US5699152A (en) * 1995-04-03 1997-12-16 Alltrista Corporation Electro-optical inspection system and method
US6448549B1 (en) 1995-08-04 2002-09-10 Image Processing Systems, Inc. Bottle thread inspection system and method of operating the same
US5805279A (en) * 1996-01-11 1998-09-08 Alltrista Corporation Method and apparatus for illuminating and imaging a can end coated with sealing material
US5923419A (en) * 1997-06-16 1999-07-13 Insight Control Systems International System and method for optical inspection of recessed surfaces
US6061125A (en) * 1998-01-27 2000-05-09 Insight Control Systems International Dual illumination apparatus for container inspection
US6621569B2 (en) 2000-05-26 2003-09-16 Applied Vision Company Llc Illuminator for machine vision
US20010048759A1 (en) * 2000-05-31 2001-12-06 Toyo Jikoki Co., Ltd. Inspection method for cap installation condition
US6643009B2 (en) * 2001-06-20 2003-11-04 Japan Crown Cork Co. Ltd. Method of inspecting a wrap-fitted state of a cap wrap-fitted to a neck of a bottle and apparatus therefor
US6967319B2 (en) * 2002-06-10 2005-11-22 Heye International Gmbh Device for checking the neck of a container for the presence of an incline
US7417725B2 (en) 2002-10-25 2008-08-26 Tiama Illumination method and device for detecting surface defects and/or material shortage on the neck ring of a container
FR2846424A1 (fr) * 2002-10-25 2004-04-30 Bsn Glasspack Procede et dispositif d'eclairage pour detecter des defaut et/ou de manque de matiere sur la bague d'un recipient transparent ou translucide
WO2004040280A1 (fr) * 2002-10-25 2004-05-13 Tiama Procede et dispositif d'eclairage pour detecter des defauts de surface et/ou de manque de matiere sur la bague d'un recipient
US20060126060A1 (en) * 2002-10-25 2006-06-15 Olivier Colle Lighting method and device for detection of surface defects and/or unfilled finish on the finish of a container
US20040263620A1 (en) * 2003-06-30 2004-12-30 Diehr Richard D. Container inspection machine
US20100039640A1 (en) * 2004-11-09 2010-02-18 Olivier Colle Illumination method and device for determining the presence of defects on the surface of a container collar
US8164746B2 (en) 2004-11-09 2012-04-24 Tiama Illumination method and device for determining the presence of defects on the surface of a container collar
WO2006051217A1 (fr) * 2004-11-09 2006-05-18 Tiama Procede et dispositif d'eclairage pour determiner la presence de defauts sur la surface de la bague d'un recipient
FR2877724A1 (fr) * 2004-11-09 2006-05-12 Tiama Sa Procede et dispositif d'eclairage pour determiner la presence de defauts sur la surface de la bague d'un recipient
WO2006100077A1 (de) * 2005-03-24 2006-09-28 OBE OHNMACHT & BAUMGäRTNER GMBH & CO. KG Vorrichtung zur optischen formerfassung von gegenständen und oberflächen
US7808644B2 (en) 2005-03-24 2010-10-05 Obe Ohnmacht & Baumgartner Gmbh & Co. Kg Device for optically measuring the shapes of objects and surfaces
CN101147042B (zh) * 2005-03-24 2010-12-29 Obe-工厂翁玛赫特与鲍姆盖特纳公司 用于光学测量物体的形状和表面的设备
US20080137088A1 (en) * 2005-03-24 2008-06-12 Obe Ohnmacht & Baumgartner Gmbh & Co. Kg Device for Optically Measuring the Shapes of Objects and Surfaces
US20100085426A1 (en) * 2006-10-23 2010-04-08 Diehr Richard D Machine for Inspecting Glass Containers
US9329135B2 (en) * 2006-10-23 2016-05-03 Emhart Glass S.A. Means for inspecting glass containers for defects
US8290296B2 (en) * 2009-07-31 2012-10-16 Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. System and method for detecting blemishes in an image captured by an electronic device
CN101990046A (zh) * 2009-07-31 2011-03-23 鸿富锦精密工业（深圳）有限公司 数字图像检测系统及方法
CN101990046B (zh) * 2009-07-31 2014-03-26 鸿富锦精密工业（深圳）有限公司 数字图像检测系统及方法
US20110026823A1 (en) * 2009-07-31 2011-02-03 Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. System and method for detecting blemishes in an image captured by an electronic device
US20130057677A1 (en) * 2010-04-26 2013-03-07 Becton Dickinson France Device, kit and method for inspection of an article
US9176071B2 (en) * 2010-04-26 2015-11-03 Becton Dickinson France Device, kit and method for inspection of an article
DE102015017539B4 (de) 2014-02-27 2025-01-02 Keyence Corporation Bildmesseinrichtung
WO2016059343A1 (fr) * 2014-10-17 2016-04-21 Msc & Sgcc Procédés, dispositif et ligne d'inspection pour visualiser la planéité d'une surface de bague de récipient
FR3027391A1 (fr) * 2014-10-17 2016-04-22 Msc & Sgcc Procedes, dispositif et ligne d'inspection pour visualiser la planeite d'une surface de bague de recipient
RU2690538C2 (ru) * 2014-10-17 2019-06-04 Тиама Способы, устройство и линия визуального контроля плоскостности поверхности кольца емкости
DE102018133567A1 (de) * 2018-12-21 2020-06-25 Böllhoff Verbindungstechnik GmbH Verfahren zur computergestützten optischen Zustandsbewertung eines Gegenstands

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AU3812585A (en) 1985-08-08
DK161263C (da) 1991-12-09
JPS60159637A (ja) 1985-08-21
EP0150846B1 (en) 1989-05-10
EP0150846A2 (en) 1985-08-07
DK41085D0 (da) 1985-01-30
EP0150846A3 (en) 1986-05-28
CA1222801A (en) 1987-06-09
DK161263B (da) 1991-06-17
DK41085A (da) 1985-08-01
DE3570133D1 (en) 1989-06-15
AU565157B2 (en) 1987-09-03
JPH0345784B2 (enrdf_load_stackoverflow) 1991-07-12

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